/* ====================================
  NHC PWA - Mejoras de Interfaz de Usuario
   Sistema de componentes UI avanzados
   ==================================== */

/* Variables para consistencia visual */
:root {
  /* Espaciado */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;

  /* Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* Typography */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;

  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  --z-toast: 1080;
}

/* ====================================
   SISTEMA DE BOTONES MEJORADO
   ==================================== */

.btn-enhanced {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  border: none;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: var(--font-size-sm);
  font-weight: 500;
  line-height: 1.5;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  user-select: none;
}

/* Tamaños */
.btn-enhanced.btn-xs {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-xs);
}

.btn-enhanced.btn-sm {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
}

.btn-enhanced.btn-lg {
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: var(--font-size-lg);
}

.btn-enhanced.btn-xl {
  padding: var(--spacing-lg) var(--spacing-xl);
  font-size: var(--font-size-xl);
}

/* Variantes */
.btn-enhanced.btn-primary {
  background: linear-gradient(135deg, #3b82f6, #1d4ed8);
  color: white;
  box-shadow: var(--shadow-sm);
}

.btn-enhanced.btn-primary:hover:not(:disabled) {
  background: linear-gradient(135deg, #2563eb, #1e40af);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn-enhanced.btn-secondary {
  background: linear-gradient(135deg, #6b7280, #4b5563);
  color: white;
  box-shadow: var(--shadow-sm);
}

.btn-enhanced.btn-success {
  background: linear-gradient(135deg, #10b981, #059669);
  color: white;
  box-shadow: var(--shadow-sm);
}

.btn-enhanced.btn-warning {
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: white;
  box-shadow: var(--shadow-sm);
}

.btn-enhanced.btn-danger {
  background: linear-gradient(135deg, #ef4444, #dc2626);
  color: white;
  box-shadow: var(--shadow-sm);
}

/* Outline variants */
.btn-enhanced.btn-outline {
  background: transparent;
  border: 2px solid currentColor;
  box-shadow: none;
}

.btn-enhanced.btn-outline-primary {
  color: #3b82f6;
  border-color: #3b82f6;
}

.btn-enhanced.btn-outline-primary:hover:not(:disabled) {
  background: #3b82f6;
  color: white;
}

/* Ghost variants */
.btn-enhanced.btn-ghost {
  background: transparent;
  border: none;
  box-shadow: none;
}

.btn-enhanced.btn-ghost:hover:not(:disabled) {
  background: rgba(59, 130, 246, 0.1);
}

/* Estados */
.btn-enhanced:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

.btn-enhanced.btn-loading {
  color: transparent;
}

.btn-enhanced.btn-loading::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: btn-spin 1s linear infinite;
}

@keyframes btn-spin {
  to { transform: rotate(360deg); }
}

/* Efecto ripple */
.btn-enhanced.btn-ripple {
  position: relative;
  overflow: hidden;
}

.btn-enhanced.btn-ripple::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn-enhanced.btn-ripple:active::before {
  width: 300px;
  height: 300px;
}

/* ====================================
   CARDS MEJORADAS
   ==================================== */

.card-enhanced {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
}

.card-enhanced:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.card-enhanced.card-interactive {
  cursor: pointer;
}

.card-enhanced.card-interactive:active {
  transform: translateY(0) scale(0.99);
}

.card-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid #f3f4f6;
}

.card-body {
  padding: var(--spacing-lg);
}

.card-footer {
  padding: var(--spacing-lg);
  border-top: 1px solid #f3f4f6;
  background: #f9fafb;
}

/* Variantes de cards */
.card-enhanced.card-elevated {
  box-shadow: var(--shadow-xl);
}

.card-enhanced.card-outlined {
  border: 2px solid #e5e7eb;
  box-shadow: none;
}

.card-enhanced.card-glass {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

/* ====================================
   INPUTS MEJORADOS
   ==================================== */

.input-enhanced {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 2px solid #e5e7eb;
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  line-height: 1.5;
  background: white;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.input-enhanced:focus {
  outline: none;
  border-color: #3b82f6;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.input-enhanced:disabled {
  background: #f9fafb;
  color: #9ca3af;
  cursor: not-allowed;
}

.input-enhanced.input-error {
  border-color: #ef4444;
}

.input-enhanced.input-error:focus {
  border-color: #ef4444;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.input-enhanced.input-success {
  border-color: #10b981;
}

/* Input groups */
.input-group {
  position: relative;
  display: flex;
  align-items: stretch;
}

.input-group .input-enhanced {
  border-radius: 0;
}

.input-group .input-enhanced:first-child {
  border-top-left-radius: var(--radius-md);
  border-bottom-left-radius: var(--radius-md);
}

.input-group .input-enhanced:last-child {
  border-top-right-radius: var(--radius-md);
  border-bottom-right-radius: var(--radius-md);
}

.input-group-addon {
  display: flex;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  background: #f9fafb;
  border: 2px solid #e5e7eb;
  border-left: none;
  font-size: var(--font-size-sm);
  color: #6b7280;
}

/* ====================================
   NAVEGACIÓN MEJORADA
   ==================================== */

.nav-enhanced {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) 0;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  color: #6b7280;
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  font-weight: 500;
}

.nav-link:hover {
  color: #3b82f6;
  background: rgba(59, 130, 246, 0.1);
}

.nav-link.active {
  color: #3b82f6;
  background: rgba(59, 130, 246, 0.1);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #3b82f6;
}

/* ====================================
   BADGES Y ETIQUETAS
   ==================================== */

.badge-enhanced {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 500;
  line-height: 1;
  white-space: nowrap;
}

.badge-enhanced.badge-primary {
  background: rgba(59, 130, 246, 0.1);
  color: #1d4ed8;
}

.badge-enhanced.badge-success {
  background: rgba(16, 185, 129, 0.1);
  color: #059669;
}

.badge-enhanced.badge-warning {
  background: rgba(245, 158, 11, 0.1);
  color: #d97706;
}

.badge-enhanced.badge-danger {
  background: rgba(239, 68, 68, 0.1);
  color: #dc2626;
}

.badge-enhanced.badge-pulse {
  animation: badge-pulse 2s infinite;
}

@keyframes badge-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

/* ====================================
   TOOLTIPS MEJORADOS
   ==================================== */

.tooltip-enhanced {
  position: relative;
  display: inline-block;
}

.tooltip-enhanced::before {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  padding: var(--spacing-sm) var(--spacing-md);
  background: #1f2937;
  color: white;
  font-size: var(--font-size-xs);
  border-radius: var(--radius-md);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: var(--z-tooltip);
}

.tooltip-enhanced::after {
  content: '';
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 4px solid transparent;
  border-top-color: #1f2937;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.tooltip-enhanced:hover::before,
.tooltip-enhanced:hover::after {
  opacity: 1;
  visibility: visible;
}

/* ====================================
   DROPDOWNS MEJORADOS
   ==================================== */

.dropdown-enhanced {
  position: relative;
  display: inline-block;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  border: 1px solid #e5e7eb;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: var(--z-dropdown);
}

.dropdown-enhanced.open .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  color: #374151;
  text-decoration: none;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.dropdown-item:hover {
  background: #f9fafb;
  color: #3b82f6;
}

.dropdown-item:first-child {
  border-top-left-radius: var(--radius-lg);
  border-top-right-radius: var(--radius-lg);
}

.dropdown-item:last-child {
  border-bottom-left-radius: var(--radius-lg);
  border-bottom-right-radius: var(--radius-lg);
}

.dropdown-divider {
  height: 1px;
  background: #e5e7eb;
  margin: var(--spacing-xs) 0;
}

/* ====================================
   MODALES MEJORADOS
   ==================================== */

.modal-enhanced {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
}

.modal-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
}

.modal-content {
  position: relative;
  background: white;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  max-width: 90vw;
  max-height: 90vh;
  overflow: auto;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: between;
  padding: var(--spacing-xl);
  border-bottom: 1px solid #e5e7eb;
}

.modal-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: #1f2937;
  margin: 0;
}

.modal-close {
  background: none;
  border: none;
  color: #6b7280;
  cursor: pointer;
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal-close:hover {
  background: #f3f4f6;
  color: #374151;
}

.modal-body {
  padding: var(--spacing-xl);
}

.modal-footer {
  display: flex;
  gap: var(--spacing-md);
  justify-content: flex-end;
  padding: var(--spacing-xl);
  border-top: 1px solid #e5e7eb;
}

/* ====================================
   PROGRESS INDICATORS
   ==================================== */

.progress-enhanced {
  width: 100%;
  height: 8px;
  background: #e5e7eb;
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, #3b82f6, #1d4ed8);
  border-radius: var(--radius-full);
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.progress-bar.animated {
  background-size: 200% 100%;
  animation: progress-shine 2s linear infinite;
}

@keyframes progress-shine {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ====================================
   RESPONSIVE UTILITIES
   ==================================== */

/* Mobile optimizations */
@media (max-width: 768px) {
  .btn-enhanced {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-base);
  }

  .card-enhanced {
    border-radius: var(--radius-md);
  }

  .card-header,
  .card-body,
  .card-footer {
    padding: var(--spacing-md);
  }

  .modal-enhanced {
    padding: var(--spacing-md);
  }

  .modal-content {
    border-radius: var(--radius-lg);
  }
}

/* ====================================
   DARK MODE SUPPORT
   ==================================== */

@media (prefers-color-scheme: dark) {
  :root {
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
  }

  .card-enhanced {
    background: #1f2937;
    color: white;
  }

  .input-enhanced {
    background: #374151;
    border-color: #4b5563;
    color: white;
  }

  .dropdown-menu {
    background: #1f2937;
    border-color: #374151;
  }

  .modal-content {
    background: #1f2937;
    color: white;
  }
}

/* ====================================
   ACCESSIBILITY IMPROVEMENTS
   ==================================== */

/* Focus visible for keyboard navigation */
.btn-enhanced:focus-visible,
.input-enhanced:focus-visible,
.nav-link:focus-visible {
  outline: 2px solid #3b82f6;
  outline-offset: 2px;
}

/* High contrast mode */
@media (prefers-contrast: high) {
  .btn-enhanced {
    border: 2px solid currentColor;
  }

  .card-enhanced {
    border: 2px solid;
  }

  .input-enhanced {
    border-width: 3px;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .btn-enhanced,
  .card-enhanced,
  .input-enhanced,
  .nav-link,
  .dropdown-menu,
  .progress-bar {
    transition: none !important;
    animation: none !important;
  }
}